US3769072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe lagging material and process for making same
Assignee: PORTER CO H
•
Filing: 1967-03-24
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Granted: 1973-10-30
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Expires: 1987-03-24
Abstract
Abstract A pipe lagging material composed of a base having impregnated therein a composition consisting essentially of inorganic hydrophilic siliceous material, which can be wet with water and wrapped about a pipe conduit to form, upon subsequent drying, a rigid, non-friable, flame-resistant covering thereon.
Inventors
- 👤 J Echerd
- 👤 W Watters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/001; C04B28/14; C04B40/00; C04B40/06; D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; D06M11/80; D06M11/81; F; F16; F16L; F16L59/00; F16L59/14; F16L59/145; C04B2111/00; C04B2111/00474; C04B2111/00663; C04B2111/00706; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2639; Y10T442/2664; Y10T442/2738
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
A pipe lagging material as defined in claim 1 wherein said latent adhesive composition constitutes at least approximately 50 percent of the dry weight of such pipe lagging material and wherein said siliceous material comprises one or more materials selected from the group consisting of kaolin, bentonite, and hydrous magnesium silicate.
Claim 2
Dependent Claim
160 words
A flame-resistant, drapable, pipe lagging material characterized by having sufficient flexibility and wet strength to permit the same to be wrapped when wet around insulated pipe surfaces and the like, and having sufficient adhesive characteristics to firmly bond itself to such surfaces upon subsequent drying, said pipe lagging material comprising a porous fabric base, having substantial flexibility and strength in both wet and dry state, and a latent adhesive composition consisting essentially of an inorganic hydrophilic siliceous material impregnated in and firmly bonded to said fabric base and substantially inseparable therefrom through leaching-out in water and through flexure in dry condition, and having adhesive characteristics, when wet, to adhere the pipe lagging material to a surface around which it is wound and, when subsequently dried, to firmly bond and form with said fabric base an adherent, non-dusting covering on such surface, said latent adhesive composition constituting at least approximately 50 percent of the dry weight of such pipe lagging material.
Claim 3
Dependent Claim
27 words
A pipe lagging material as defined in claim 3 wherein said latent adhesive composition constitutes approximately 80 percent of the dry weight of such pipe lagging material.
Claim 4
Dependent Claim
142 words
A flame-resistant, drapable, pipe lagging material characterized by having sufficient flexibility and wet strength to permit the same to be wrapped when wet around insulated pipe surfaces and the like, and having sufficient adhesive characteristics to firmly bond itself to such surfaces upon subsequent drying, said pipe lagging material comprising a porous asbestos-base, woven, textile fabric base, having substantial flexibility in both wet and dry state, and a latent adhesive composition consisting essentially of an inorganic hydrophilic siliceous material impregnated in and firmly bonded to said fabric base and substantially inseparable therefrom through leaching-out in water and through flexure in dry condition, and having adhesive characteristics, when wet, to adhere the pipe lagging material to a surface around which it is wound and, when subsequently dried, to firmly bond and form with said fabric base an adherent, non-dusting covering on such surface.
Claim 5
Dependent Claim
27 words
A pipe lagging material as defined in claim 5 in which said asbestos-base, woven, textile fabric base consists of at least 50 percent by weight asbestos fibers.
Claim 6
Dependent Claim
35 words
A pipe lagging material as defined in claim 5 wherein said latent adhesive composition includes sodium fluoborate and which composiTion constitutes at least approximately 50 percent of the dry weight of such pipe lagging material.
Claim 7
Dependent Claim
51 words
A pipe lagging material as defined in claim 5 wherein said latent adhesive composition constitutes at least approximately 50 percent of the dry weight of such pipe lagging material, and wherein said siliceous material comprises one or more materials selected from the group consisting of kaolin, bentonite, and hydrous magnesium silicate.
Claim 8
Dependent Claim
18 words
A pipe lagging material as defined in claim 8 wherein said latent adhesive composition includes Plaster of Paris.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |